Alky carbs on 10 mill cub

[banshee332]

What size do you guys drill the dumps and mains to for a 10 mill cub. I have a set of 39 pwks that are drilled to 118. Is that enough?

[LT ROOKIE]

A friend if mine is running 120 mains, 55-60 pilot on his 10 mill cub. I don't know his dump tube size.

[LT ROOKIE]

A friend if mine is running 120 mains, 55-60 pilot on his 10 mill cub. I don't know his dump tube size. My 39 pwks have a 122 dump tube that were done by a&s

[banshee332]

Thanks, anyone else care to share

[mx1986]

I believe mine is .115 or .112 main jet but the dumps r .120 on my 38 pwk

I think ur alright if ur main jet is smaller then ur dump Cuz ur main is only gona flow as much as ur dump allows.

[J-Madd]

That might be ok on the dumps. YOu may have to drill out the power jets  to feed it on the big end though. I think I ran 0.120" with 41 mm PWKs on mine. I run Lectrons on the motor I'm running now.

[banshee332]

What size drill bit is 120?

[SlowerThanYou]

What size drill bit is 120?

 

.120

[SlowerThanYou]

We run a .120 dump & .120 Main with a DGH needle with bored 39 PWKs on our 643 DMX.

[J-Madd]

I think its a #31 index bit if this chart is correct. http://en.wikipedia.org/wiki/Drill_bit_sizes#Metric_drill_bit_sizes

[Guest JohnTabata]

Yes a #31 drill is .120

[bada450r]

Thanks, anyone else care to share

i run 118 all the way thru on my 4mil cub...thats at sea level

[dozer]

I know asked about a ten mil but around a 1000ft asl .118 and 55 pilots on my 4mm cub